Connecting device with insulators.



A. H. FARGO.

CONNECTING DEVICE WITH INSULATORS.

APPLICATION FILED APR. 4. 1914 RENEWED SEPT. 14. 1917.

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UNITED STATES PATENT OFFICE.

ARTHUR H. FARGO, OF WILMINGTON, DELAWARE.

CONNECTING DEVICE WITH INSULATORS.

Application filed April 4, 1914, Serial No. 829,550.

To all whom it may concern:

Be it known that I, ARTHUR H. FARGO, a citizen of the United States, residing at Wilmington, in the county of New Castle and State of Delaware, have invented new and useful Improvements in Connecting De- 'vices with Insulators, of which the following is a specification.

This invention relates to a connector for the meeting ends of wires, cables, or the like, whether they are intended for use as mere mechanical devices or as conductors of electricity, the primary object being to provide a connector which includes relatively adjustable sections adapted to inclose the ends of the wires, these members being adapted also to act upon the said wires, as the former are adjusted so as to create a twisted splice, whereby a joint of maximum physical strength as well as electric conductivity is afl'orded.

A further object is to provide a connector of this character which is constructed so as to be adapted to be connected readily to a ground 1p'e or the like.

Another 0 ject is the provision of an insulating casing which is adapted to inclose the connector so as to insulate the same effectively, and at the same time render the connector substantially waterproof and airtight.

A still further object of the invention is to provide an insulating casing which is composed of separable sections, whereby it is rendered capable of being readily applied to or detached from the connector.

The invention consists in the features of construction, combination, and arrangement of parts, hereinafter fully described and claimed, reference being had to the accompanying drawings, in which:

Figure 1 is a side elevation of the preferred form of wire connector, showing the same applied to the adjacent ends of a plurality of wires;

Fig. 2 is a longitudinal sectional view taken through the same;

Fig. 3 is a side elevation of the modified form of the connector which is adapted to form a single twist splice;

Fig. 4 is a longitudinal sectional view therethrough;

Fig. 5 1s a longitudinal sectional view through the terminal connector, constructed in accordance with the invention;

Fig. 6 is" a side elevation of the ground Specification of Letters Patent.

Patented Apr. 163, 1918.

Renewed September 14, 1917; Serial No. 191,501.

ticular to Figs. 1 and 2 inclusive, it will be.

seen that the preferred embodiment of the invention consists of two terminal members 1 and 2 and an intermediate member 3. The terminal members are shown as being constructed tapering toward their outer ends and also as being elliptical in transverse section, but it is to be understood that they may be constructed cylindrical in shape when this proves desirable. Each terminal member is hollow and is provided at its inner end with an enlarged head 4 having angularly disposed outer faces for the application of a wrench or other suitableturning implement (not shown) thereto. The intermediate member is provided exteriorly with angular faces for engagement by a turning implement and is provided upon its ends with threaded nipples 5 forengagement within the'threaded sockets 6 which are provided in the heads 4 of the terminal members. The outer end of 'each terminal member has a head 7 in which parallel openings 8 are formed for the reception of the overlapping, meeting ends of, the wires, such as are indicated by the numeral 9. The intermediate member is constructed hollow and is provided with a medial wall 10 in which parallel openings 11 are provided and through which the wires are adapted to extend. Inv applying the connector to the ends'of the wires, the members of the connector are arranged with their respective wire openings in registration and the wires are inserted therethrough in parallel, overlapping'relation to each other.

in the terminal members will be twisted oppositely to form a double-twist splice.

It should be apparent that the wires, when twisted, will serve to prevent accidental detachment of the coupled members of the connector, but, in order to make the joint even more effective, annular washers, such as are indicated by the numeral 12, may be applied to the nipples of the intermediate member so as to be interposed between the shoulders formed by the adjacent. marginal portions of the coupled members. Each washer is adapted to be constructed of fiber or elastic material, or even of thin metal. These washers may be applied to this form of the connector or to any of the other. forms, which will be described presently, whenever practicable.

In Figs. 3 and 4E inclusive, a slightly modified form of the connector is disclosed. This form of connector is adapted to produce a single twist in the wires, and is composed of only two members. These members are constructed identically the same as the terminal members in the preferred form of the device, with the exception that one of them is provided with an exteriorly threaded nipple 14: upon its head instead of havin an interiorly threaded socket. adapted to be threaded into the socket of the coacting member, after the overlapping ends of the wires have been inserted through the head openings of the members, to produce a single twist in the wires.

In the use of either form of the connector, when it is desired to break the joint, the companion members are uncoupled, whereupon the wires will be untwisted and will be nearly straight, owing to the fact that they are confined closely between the interior.

walls of the said members. The wires may thus be withdrawn freely through the end wall openings 8.

In Fig. 5 a terminal connector is shown constructed in accordance with the modified form of the invention, the only difference in construction being the addition of the laterally projecting arm 18 upon the outer end of the female member, which is provided with a longitudinal outwardly projecting extension or lug 19 having a radially disposed binding post aperture 20 therein.

A ground connector for electric conductors is shown in Figs. 6 and 7. This device embodies the construction of Fi s. 3 and 4 inclusive and diflers therefrom 1n the provision of an internally threaded sleeve 21 which is formed upon the outer end of the female member in alinement therewith. This sleeve is adapted to be threaded onto the upper end of a ground pipe, such as shown at 22, whereby a good ground connection may be established.

In the remaining figures of drawing, I have shown an insulating casing "for the con- This nipp e is nector when it is used to connect electric wires. This casing comprises separable sections 29 and 30, each of which is substantially frustoconical in shape so as to conform to the exterior configuration of either the preferred form of the connector or the modified form, depending upon the length of the casing. The inner end of the section 29 has its interior bore enlarged as at 31 to provide a socket for the reception of the exteriorly reduced inner end portion 32 of the companion section. The bores of both sections are adapted to aline with each other when they are united and are secured together detachably by means of the diametrieally opposite lugs 33 provided in the socket of the member 29 for engagement within the bayonet grooves 34 in the outer periphery of the reduced portion 32 of the coacting section. The casing sections are externally knurled so that they may be grasped securely when connecting or detaching the same. The section 30 is provided exteriorly with an annular socket or groove 35 in the shoulder formed at the junction of its body portion with the reduced extension 32 thereof, this socket being intended for the reception of the inner edge 36 of the companion section 29, when the sections are united. The socket 35 may be coatedwith adhesive insulating material so as to form an air-tight and watertight joint between sections. The openings 37 and 38 in the outer end walls of the easing sections are provided. with peripheral grooves for the reception of adhesive insulating material, which is intended to be employed as means for affording an air-tight joint between the ends of the sections and the Wires extending through the said openings. It should be apparent that, when the sections are united, the connector mounted therein will be inclosed completely and sealed against the injurious effects of air and moisture.

It is to be understood that I do not limit myself necessarily to the exact shape of the parts or members of any form of the connector shown and described herein, but ma resort to changes therein, such as fall within the scope of the appended claims, in practice,

as may be found necessary.

What is claimed is: I

1. A connector, comprising two members provided withinterlocking means to normally secure them together, said members being adapted to receive a plurality of conductors and operative by a relative turning to twist said conductor together.

2. A connector, comprising two members provided with interlocking threaded portions to normally secure them together, said members being adapted to receive a plurality of conductors extending therethrough and operative by a relative turning to twist said conductor together within said connector.

3. A connector, comprising two members provided with interlocking means to normally secure them together, said members being provided with recesses adapted to receive a plurality of conductors extending therethrough and operative by the relative turning of said members to twist said conductors together.

4;. A connecting device for connecting electric current carrying conductors and the like comprising end sections adapted for relative turning movement in opposite directions to connect the same together and each having the outer end walls formed with openings arranged side by side and alining respectively with the openings in the end wall of the other section, in combination with a pair of wires passed through the openings in the end walls of the sections and adapted to have the portions thereof between said end walls intertwisted in the relative turning movement of the end sections.

5. A. connecting device for connecting electric current carrying conductors and the like comprising end sections adapted for relative turning movement in opposlte directions to connect the same together and each having the outer end walls formed with openings arranged side by side and alining respectively with the openings in the end .wall of the other section, in combination with a pair of wires passed through the openings in the end walls of the sections and adapted to have the portions thereof between said end walls intertwisted in the relative turning movement of the end sections formed centrally with a transverse partition having openings therein arranged side by side and adapted to register with the openings in end walls of said end sections respectively to receive the central portion of the wires between the end sections.

6. A connecting device for connecting electric current carrying conductors and the like comprising end sections adapted for relative turning movement in opposite directions toconnect the same together and each having the outer end walls formed with openings arranged side by side and alining respectively with the openings in the end wall of the other section, in combination with a pair of wires passed through the openings in the end walls of the sections and adapted to have the portions thereof between said end walls intertwisted in the relative turning movement of the end sections, and a casing of insulating material enveloping said end sections.

7. A connecting device for connecting electric current carrying conductors and the like comprising end sections adapted for relative turning movement in opposite directions to connect the same together and each having the outer end walls formed with openings arranged side by side and alining respectively with the openings in the end wall of the other, section, in combination with a pair of wires passed through the openings in the end walls of the sections and adapted to have the portions thereof between said end walls intertwisted by the relative turning movement of the end sections, and a casing of insulated material enveloping said end sections and comprising end sections corresponding to the first-mentioned end sections and detachably connected to each other.

In testimony whereof I aflix my signature in'presence of two witnesses.

ARTHUR H. FARGO.

Witnesses:

THOMAS H. BUGKLEY, JOHN C. BOULDER. 

